CN210722938U - Arc extinguishing structure and neutral pole mechanism - Google Patents

Abstract

The utility model provides an arc extinguishing structure and neutral pole mechanism sets up in the outside of static contact and moving contact, including the explosion chamber, locate the striking plate of static contact or moving contact one side, locate the first striking direction muscle between static contact and the moving contact, one side that moving contact or static contact were kept away from to the explosion chamber has row's arc mouth, and striking plate and first striking direction muscle all extend towards row's arc mouth. The utility model discloses an arc extinguishing structure and neutral pole mechanism, one side at static contact or moving contact directly sets up the striking plate, thereby draw forth the electric arc of side to row's arc mouth, first striking direction muscle is drawn forth the electric arc between moving contact and the static contact to row's arc mouth, the pressure differential that the gas pressure that the electric arc produced in the arc extinguishing chamber forces it to shift to row's arc mouth direction fast, make electric arc under the effect of the inherent atmospheric pressure difference of arc way of design and striking plate and first striking direction muscle, row's arc mouth direction can be introduced fast, thereby reach the function of extinguishing electric arc fast.

Description

Arc extinguishing structure and neutral pole mechanism

Technical Field

The utility model relates to a low-voltage apparatus's technical field, concretely relates to arc extinguishing structure and neutral pole mechanism.

Background

Along with the continuous increase of consumer's consumer, the application of residual current circuit breaker product is also continuously increasing, and residual current circuit breaker generally adopts the mode of neutral utmost point direct-flow to realize at present, utilizes residual current circuit breaker's structure that can break, can provide the electrical isolation protection of neutral utmost point simultaneously when the equipment outage. Generally, the circuit breaker that adopts looks same looks line pole among the prior art is as the protection of neutral pole, increases residual current protection module in addition promptly, but, increases the volume area occupied of whole product behind the residual current protection module in addition great to phase line pole tripping device and neutral pole mechanism have an arc extinguishing mechanism respectively in residual current circuit breaker, thereby improve arc voltage, improve disjunction ability and arc extinguishing effect. However, the arc extinguishing mechanisms are respectively arranged, so that the structure of the whole circuit breaker is large, and the requirement for miniaturization of the product volume cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an arc extinguishing structure and neutral pole mechanism to set up the great technical problem of structure that arc extinguishing mechanism can lead to whole circuit breaker among the solution prior art respectively.

In order to achieve the above object, the utility model adopts the following technical scheme: the arc extinguishing structure is arranged on the outer sides of a fixed contact and a movable contact, and comprises an arc extinguishing chamber, an arc striking plate and a first arc striking guide rib, wherein the arc striking plate is arranged on one side of the fixed contact or the movable contact, the first arc striking guide rib is arranged between the fixed contact and the movable contact, the fixed contact, the movable contact, the arc striking plate and the first arc striking guide rib are both located in the arc extinguishing chamber, the arc extinguishing chamber is far away from the movable contact or one side of the fixed contact is provided with an arc discharge port, and the arc striking plate and the first arc striking guide rib all face the arc discharge port to extend.

Furthermore, the static contact is fixed on the arc striking plate, and the moving contact is located on one side of the arc striking plate and can be abutted against the static contact.

Furthermore, the arc extinguishing chamber comprises a cover plate covering the fixed contact and the moving contact and an arc baffle for supporting the cover plate, and the arc baffle is arranged on the outer sides of the arc striking plate and the first arc striking guide rib.

Furthermore, the arc baffle is provided with a sliding groove for the moving contact to move, the cover plate is provided with a partition plate, and the partition plate corresponds to the arc baffle.

Furthermore, still be equipped with second striking direction muscle on the apron, just second striking direction muscle with first striking direction muscle sets up relatively.

Furthermore, a baffle plate is arranged on the cover plate close to the row of arc openings.

Furthermore, one side of the arc striking plate, which is far away from the arc discharge port, is provided with a current-carrying conductor, and the current-carrying conductor is fixedly connected with the arc striking plate.

The movable contact is connected with the wiring board through a flexible wire, an arc extinguishing angle plate is fixed on the outer side of the wiring board and located on one side, far away from the fixed contact, of the movable contact, and the arc extinguishing angle plate extends towards the arc discharge opening.

Further, the arc extinguishing scute includes the fixed board of bending and extends the board of bending, fixed bend the board be used for with keep off arc board fixed connection, extend the board of bending by fixed board of bending is bent and is faced the row's arc mouth extends.

The utility model also discloses a neutral pole mechanism, including the casing with as above the arc extinguishing structure, first striking direction muscle is direct protruding to be located on the casing.

The utility model provides an arc extinguishing structure and neutral pole mechanism's beneficial effect lies in: compared with the prior art, the arc extinguishing structure and the neutral pole mechanism of the utility model have the advantages that the arc striking plate is directly arranged on one side of the static contact or the moving contact, so that the electric arc on the side edge is led out to the arc discharge port; draw forth the electric arc between moving contact and the static contact to arranging the arc mouth through the first striking direction muscle that sets up between moving contact and static contact, the gas pressure that the electric arc produced forces its fast to arranging the arc mouth direction transfer at the pressure differential that the arc chamber produced, through striking plate and the cooperation of first striking direction muscle, make electric arc under the effect of the inherent atmospheric pressure difference of arc way of design and striking plate and first striking direction muscle, can introduce row arc mouth direction fast, thereby reach the function of extinguishing electric arc fast, the volume of more traditional arc extinguishing structure dwindles greatly, increase user's block terminal return circuit installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of an arc extinguishing structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an arc extinguishing structure according to an embodiment of the present invention, wherein a cover plate is not shown;

fig. 3 is a schematic perspective view of a cover plate according to an embodiment of the present invention.

Description of reference numerals:

1. an arc extinguishing chamber; 2. an arc striking plate; 3. a first arc striking guide rib; 4. static contact; 5. a moving contact; 6. Arc extinguishing angle plates; 7. a housing; 8. a linkage assembly; 11. a cover plate; 12. an arc baffle; 13. arranging arc ports; 111. a partition plate; 112. a second arc striking guide rib; 113. a baffle plate; 121. a chute; 21. a current carrying conductor; 51. a wiring board; 61. fixing the bent plate; 62. and extending the bent plate.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to fig. 3, an arc extinguishing structure according to the present invention will now be described. The arc extinguishing structure is arranged on the outer sides of a fixed contact 4 and a movable contact 5, and comprises an arc extinguishing chamber 1, an arc striking plate 2 arranged on one side of the fixed contact 4 or the movable contact 5, a first arc striking guide rib 3 arranged between the fixed contact 4 and the movable contact 5, the fixed contact 4, the movable contact 5, the arc striking plate 2 and the first arc striking guide rib 3 are both located in the arc extinguishing chamber 1, the arc extinguishing chamber 1 is far away from the movable contact 5 or one side of the fixed contact 4 is provided with an arc discharge port 13, and the arc striking plate 2 and the first arc striking guide rib 3 all face the arc discharge port 13 to extend.

Compared with the prior art, the arc extinguishing structure provided by the utility model has the advantages that the arc striking plate 2 is directly arranged on one side of the static contact 4 or the moving contact 5, so that the electric arc on the side edge is led out to the arc discharge port 13; draw forth the electric arc between moving contact 5 and the static contact 4 to row's arc mouth 13 through setting up the first striking direction muscle 3 between moving contact 5 and static contact 4, the gas pressure that the electric arc produced forces it to shift to row's arc mouth 13 direction fast at the pressure differential that produces in explosion chamber 1, through striking plate 2 and the cooperation of first striking direction muscle 3, make electric arc under the effect of the inherent pressure differential of arc path of design and striking plate 2 and first striking direction muscle 3, can introduce row's arc mouth 13 direction fast, thereby reach the function of extinguishing electric arc fast, the volume of more traditional arc extinguishing structure reduces greatly, increase user's block terminal return circuit installation.

The arc discharge port 13 faces a cavity without other components or devices, an outlet capable of discharging or extinguishing the arc is arranged on one side of the cavity, the arc is contained in the cavity, and the arc is discharged from the outlet, so that the arc guided to the cavity can be quickly extinguished.

Further, please refer to fig. 2 together, as a specific implementation manner of the arc extinguishing structure provided by the present invention, the static contact 4 is fixed on the arc striking plate 2, and the moving contact 5 is located on one side of the arc striking plate 2 and can abut against the static contact 4. Specifically, the static contact 4 is fixedly attached to the arc striking plate 2, the arc striking plate 2 is located on one side, away from the moving contact 5, of the static contact 4, so that the moving contact 5 can move towards the static contact 4 under the driving of the linkage component 8, and the arc striking plate 2 is located on one side, away from the moving contact 5, of the static contact 4 and can guide the electric arc on the outer edge of the static contact 4 to the arc discharge port 13, so that all the electric arcs can be guided to the arc discharge port 13 to achieve arc extinguishing operation.

Further, please refer to fig. 1 to 3, as a specific embodiment of the arc extinguishing structure provided by the present invention, the arc extinguishing chamber 1 includes a cover covering the fixed contact 4 and the cover plate 11 on the movable contact 5 and an arc baffle 12 for supporting the cover plate 11, the arc baffle 12 is disposed outside the arc striking plate 2 and the first arc striking guiding rib 3. Specifically, moving contact 5, static contact 4, striking plate 2 and first striking direction muscle 3's the outside all encircles and establishes arc baffle 12, then establishes apron 11 at the overhead lid of arc baffle 12, can guarantee that electric arc can not influence outside equipment to by striking plate 2 and first striking direction muscle 3 with electric arc guide to row arc mouth 13, until discharging to the chamber of no other components and parts, thereby reach the function of extinguishing electric arc fast.

Further, referring to fig. 2, as a specific implementation manner of the arc extinguishing structure provided by the present invention, a chute 121 for the moving contact 5 to move is disposed on the arc blocking plate 12, and a partition 111 is disposed on the cover plate 11, where the partition 111 corresponds to the arc blocking plate 12. Specifically, the moving contact 5 can take place relative movement under the drive of linkage subassembly 8, and the moving contact 5 can be drawn close towards the static contact 4, consequently set up spout 121 and can make things convenient for the removal of moving contact 5, and arc baffle 12 and baffle 111 combine together and can also play the effect of sheltering from electric arc, effectively avoid electric arc to get into a large amount of mechanisms and other positions and cause the damage, can guarantee simultaneously that the pressure differential that the gas pressure that electric arc produced forces it to shift to row's of arc mouth 13 direction fast in explosion chamber 1.

Further, referring to fig. 3, as a specific implementation manner of the arc extinguishing structure provided by the present invention, a second arc striking guide rib 112 is further disposed on the cover plate 11, and the second arc striking guide rib 112 is disposed opposite to the first arc striking guide rib 3. Specifically, the second arc striking guide rib 112 is disposed on the inner surface of the cover plate 11, the first arc striking guide rib 3 and the second arc striking guide rib 112 are disposed oppositely, and a gap is formed between the first arc striking guide rib 3 and the second arc striking guide rib 112, so that the moving contact 5 can move in the gap. The first arc striking guide rib 3 and the second arc striking guide rib 112 are arranged on two sides of the moving contact 5, so that the arc striking effect can be effectively enhanced.

Further, referring to fig. 1, as a specific embodiment of the arc extinguishing structure provided by the present invention, a baffle 113 is disposed at a position of the cover plate 11 close to the arc discharge port 13. Specifically, baffle 113 sets up at the top of apron 11, and baffle 113's one end and apron 11 fixed connection, the other end and the casing 7 inside wall looks butt of neutral pole structure to guarantee that electric arc can not pass back through the upper surface transmission of apron 11, can reach better arc extinguishing and shelter from the effect.

Further, please refer to fig. 2, as a specific implementation manner of the arc extinguishing structure provided by the present invention, a current-carrying conductor 21 is disposed on one side of the arc striking plate 2 away from the arc discharge port 13, and the current-carrying conductor 21 is fixedly connected to the arc striking plate 2. In particular, the current-carrying conductor 21 functions as a carrier for the rated current, which can carry away the current conducted to the arc starting plate 2, and can prevent the current from affecting the arc conduction.

Further, please refer to fig. 2, as a specific implementation manner of the arc extinguishing structure provided by the present invention, the arc extinguishing structure further includes a wiring board 51, the moving contact 5 is connected with the wiring board 51 through a flexible wire, and an arc extinguishing angle plate 6 is fixed on the outer side of the wiring board 51, the arc extinguishing angle plate 6 is located on one side of the moving contact 5 away from the static contact 4, and the arc extinguishing angle plate 6 extends toward the arc discharge port 13. Specifically, the arc extinguishing scute 6 is located the one side that the static contact 4 was kept away from to the moving contact 5, therefore the electric arc that the moving contact 5 produced can be rapid transmit to the arc extinguishing scute 6 and transmit it away, and the setting that the arc extinguishing scute 6 formed the radian is in moving contact 5 one side, and the setting of arc extinguishing scute 6 can not influence the removal of moving contact 5. The arc extinguishing angle plate 6 and the arc striking plate 2 are combined to guide the electric arcs on two sides of the moving contact 5 and the static contact 4, so that the electric arcs can be discharged from the direction of the arc discharge port 13, and the function of quickly extinguishing the electric arcs is achieved.

Further, please refer to fig. 2, as a specific embodiment of the arc extinguishing structure provided by the present invention, the arc extinguishing angle plate 6 includes a fixed bending plate 61 and an extended bending plate 62, the fixed bending plate 61 is used for being fixedly connected with the arc baffle 12, and the extended bending plate 62 is bent by the fixed bending plate 61 and extends toward the arc discharge opening 13. Specifically, fixed board 61 of bending is used for and keeps off arc board 12 fixed connection to realize the fixed of whole arc extinguishing scute 6, extend the board 62 of bending and fixed bend and be formed with the angle of bending between the board 61, the angle of should bending is used for avoidng moving contact 5, and extend board 62 of bending and fixed board 61 of bending and generally be integrated into one piece, extend the board 62 of bending and can be extended by one side orientation row arc mouth 13 that is close to moving contact 5. And the extension bending plate 62 has a certain radian, which is an arc-shaped guide rib that the middle section protrudes towards the striking arc, so that the arc is conveniently guided to the striking arc guide rib.

Referring to fig. 1 to 3, the present invention further provides a neutral pole mechanism, which includes a housing 7 and an arc extinguishing structure in any one of the above mentioned embodiments, wherein the first arc guiding rib 3 is directly protruded on the housing 7.

The utility model provides a neutral pole mechanism, wherein an arc striking plate 2 is directly arranged on one side of a static contact 4 or a moving contact 5, so that the electric arc on the side edge is led out to an arc discharge port 13; draw forth the electric arc between moving contact 5 and the static contact 4 to row's arc mouth 13 through setting up the first striking direction muscle 3 between moving contact 5 and static contact 4, the gas pressure that the electric arc produced forces it to shift to row's arc mouth 13 direction fast at the pressure differential that produces in explosion chamber 1, through striking plate 2 and the cooperation of first striking direction muscle 3, make electric arc under the effect of the inherent pressure differential of arc path of design and striking plate 2 and first striking direction muscle 3, can introduce row's arc mouth 13 direction fast, thereby reach the function of extinguishing electric arc fast, the volume of more traditional arc extinguishing structure reduces greatly, increase user's block terminal return circuit installation.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. Arc extinguishing structure sets up in the outside of static contact (4) and moving contact (5), its characterized in that: including explosion chamber (1), locate static contact (4) or striking board (2) of moving contact (5) one side, locate static contact (4) with first striking direction muscle (3) between moving contact (5), static contact (4) moving contact (5) striking board (2) first striking direction muscle (3) all are located in explosion chamber (1), just explosion chamber (1) is kept away from moving contact (5) or one side of static contact (4) has row's nock (13), striking board (2) with first striking direction muscle (3) all face row's nock (13) extend.

2. The arc extinguishing structure of claim 1, wherein: the fixed contact (4) is fixed on the arc striking plate (2), and the moving contact (5) is positioned on one side of the arc striking plate (2) and can be abutted against the fixed contact (4).

3. The arc extinguishing structure of claim 1, wherein: the arc extinguishing chamber (1) comprises a cover plate (11) covering the fixed contact (4) and the movable contact (5) and an arc baffle (12) used for supporting the cover plate (11), and the arc baffle (12) is arranged on the outer sides of the arc striking plate (2) and the first arc striking guide rib (3).

4. An arc extinguishing structure according to claim 3, characterized in that: the arc baffle (12) is provided with a sliding chute (121) for the movable contact (5) to move, the cover plate (11) is provided with a partition plate (111), and the partition plate (111) corresponds to the arc baffle (12).

5. An arc extinguishing structure according to claim 3, characterized in that: and a second arc striking guide rib (112) is further arranged on the cover plate (11), and the second arc striking guide rib (112) is opposite to the first arc striking guide rib (3).

6. An arc extinguishing structure according to claim 3, characterized in that: the cover plate (11) is provided with a baffle (113) close to the arc discharge port (13).

7. An arc extinguishing structure according to claim 3, characterized in that: one side of the arc ignition plate (2) far away from the arc discharge port (13) is provided with a current-carrying conductor (21), and the current-carrying conductor (21) is fixedly connected with the arc ignition plate (2).

8. An arc extinguishing structure according to claim 3, characterized in that: the novel contactor further comprises a wiring board (51), the movable contact (5) is connected with the wiring board (51) through flexible wires, an arc extinguishing angle plate (6) is fixed on the outer side of the wiring board (51), the arc extinguishing angle plate (6) is located on one side, away from the fixed contact (4), of the movable contact (5), and the arc extinguishing angle plate (6) extends towards the arc discharge port (13).

9. The arc extinguishing structure of claim 8, wherein: arc extinguishing scute (6) are including fixed board (61) of bending and extension board (62) of bending, fixed board (61) of bending be used for with keep off arc board (12) fixed connection, extend board (62) of bending by fixed board (61) of bending bend and orientation arrange arc mouth (13) and extend.

10. Neutral pole mechanism, its characterized in that: comprising a housing (7) and an arc extinguishing structure according to any of claims 1 to 9, the first arc ignition guide rib (3) being directly provided protruding on the housing (7).

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